Oral appliance



FIG. 1 is a front perspective view of an oral appliance of a firstembodiment of the design;

FIG. 2 is a front view of an oral appliance as shown in FIG. 1 ;

FIG. 3 is a rear view of an oral appliance as shown in FIG. 1 ;

FIG. 4 is a right side view of an oral appliance as shown in FIG. 1 ;

FIG. 5 is a left side view of an oral appliance as shown in FIG. 1 ;

FIG. 6 is a top plan view of an oral appliance as shown in FIG. 1 ;

FIG. 7 is a bottom plan view of an oral appliance as shown in FIG. 1 ;

FIG. 8 is a front perspective view of an oral appliance of a secondembodiment of the design;

FIG. 9 is a front view of an oral appliance as shown in FIG. 8 ;

FIG. 10 is a rear view of an oral appliance as shown in FIG. 8 ;

FIG. 11 is a right side view of an oral appliance as shown in FIG. 8 ;

FIG. 12 is a left side view of an oral appliance as shown in FIG. 8 ;

FIG. 13 is a top plan view of an oral appliance as shown in FIG. 8 ;and,

FIG. 14 is a bottom plan view of an oral appliance as shown in FIG. 8 .

The broken lines shown in the drawings are for the purpose ofillustrating environmental structure and form no part of the claimeddesign.

CLAIM The ornamental design for an oral appliance, as shown anddescribed.